Being a scientist, Mr. Greback realizes that he is gravitationally attracted to his wife. His wife has a mass of 50kg with a radius of 0.25m and he has a mass of 150kg with a radius of 0.5m. If he gives her a hug, how much gravitational force is Mr. Greback experiencing with his wife?

powerful computers now, not then

in most common fires, oxygen is needed for an oxidation reaction to takes place. the combination of oxygen with any element as fuel can create fire and combustion will occur especially if wood, light materials and other combustible things are combine with oxygen.